SpaceAtlas Space Object Data
NASA JPL SBDB · 2008 XF

2008 XF

2008 XF is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.304 AU once every 1.49 yr.

Amor Observations: 29
Orbital Period · P
1.49 yr
v(q)
29.9 km/s
v(Q)
22.7 km/s
Diameter · ≈
0.08 km
TJ
4.95
Eccentricity · e
0.1369

Orbit and dynamics

Between its closest point (1.126 AU) and its farthest (1.483 AU), the heliocentric distance changes by 0.357 AU over every revolution.

One full revolution takes 1.49 yr (544 days), computed from the semi-major axis of 1.304 AU.

An eccentricity of 0.137 makes the orbit moderately elongated.

The orbital plane is tilted 14.45° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 29.9 km/s at perihelion and falls to 22.7 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 23.17 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.08 km.

Observation record and orbit quality

Astrometry from 29 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6707 arcseconds.

Condition code U = 1 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

About these computed values

Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Orbital Parameters

Semi-Major Axis
1.304 AU
Eccentricity
0.1369
Perihelion
1.126 AU
Aphelion
1.482518 AU
Inclination
14.45°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
228.43°

Orbit diagram

The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.

3D orbit (interactive)

Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.

Close approaches

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2027-May-03 15:24 0.319382 AU
47778906 km
7.90 km/s
2030-May-14 00:30 0.349784 AU
52326938 km
8.20 km/s
2033-May-24 06:03 0.386122 AU
57762958 km
8.40 km/s
2036-Jun-03 05:28 0.423761 AU
63393727 km
8.46 km/s
2039-Jun-14 14:09 0.460004 AU
68815619 km
8.41 km/s
2042-Jun-25 03:48 0.492417 AU
73664470 km
8.21 km/s
2063-Oct-02 07:50 0.470676 AU
70412141 km
6.76 km/s
2066-Oct-17 22:49 0.417249 AU
62419519 km
7.25 km/s
2069-Nov-01 08:52 0.354172 AU
52983327 km
7.58 km/s
2072-Nov-13 23:56 0.287766 AU
43049188 km
7.70 km/s
2075-Nov-26 04:24 0.230193 AU
34436367 km
7.65 km/s
2078-Dec-06 00:33 0.201621 AU
30162131 km
7.67 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
23.17

Orbit Quality

RMS
0.67075
Condition
1
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

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